What Hoghunter said, and I will add that Plugs start to dart back on forth 3-5 feet at higher speeds. This is the action you want. You wont want a slow wobble like you may see when you water test them at the boat, they should zip back and forth like a Rapala does. 0-3 mph, you have the wobble, go 4-5 and the plug will work correctly.

I also mainline to a 50# 6 foot leader via a heavy bead chain.
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